FN3258-55-52 Equivalent & Substitute Parts

Part Overview

The FN3258-55-52 is a three-phase delta EMC/EMI line filter rated for 55 A with chassis mount configuration and terminal block termination. This component is designed for general-purpose applications requiring electromagnetic compatibility filtering in three-phase AC systems operating at 480 V phase-to-phase and 277 V phase-to-ground/neutral.

The FN3258-55-52 carries an obsolete product status. Locating active equivalent components is necessary to ensure continued availability, supply chain reliability, and access to current manufacturing support and certifications.

Substiute Parts

FN3258-55-52

Schaffner EMC Inc.In Stock: 786FN3258-55-52 Datasheet

Current PartRFQ

FN3258-55-34

Schaffner EMC Inc.In Stock: 836FN3258-55-34 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the FN3258-55-52 is determined by strict equivalence across the following critical parameters:

Filter topology and electrical characteristics: Three-phase delta configuration, single-stage design, 55 A current rating, 480 V phase-to-phase and 277 V phase-to-ground/neutral voltage ratings, and DC ~ 60Hz operating frequency must remain unchanged.

Physical and mechanical compatibility: Chassis mount configuration and terminal block termination style must be preserved to ensure direct installation compatibility.

Regulatory and compliance alignment: Approval agencies (CSA, ENEC, UR), RoHS compliance status, and REACH classification must be maintained or improved.

The FN3258-55-34 meets all substitution criteria as an active product within the same FN 3258 series, maintaining identical electrical specifications and mechanical form factor while offering improved supply chain availability.

Parameter Comparison

Engineering Selection Recommendations

The FN3258-55-34 is the direct substitute for the FN3258-55-52. Both components share identical electrical ratings, mechanical form factors, and regulatory certifications. The FN3258-55-34 maintains active product status with current manufacturing support, ensuring long-term availability and supply chain continuity. The upgrade from RoHS Compliant to ROHS3 Compliant status on the FN3258-55-34 represents enhanced environmental compliance without affecting electrical or mechanical performance. No design modifications or system re-qualification are required for this substitution.

Frequently Asked Questions (FAQ)

Q: Can the FN3258-55-34 be used as a direct replacement for the FN3258-55-52?

A: Yes. Both components are three-phase delta EMC/EMI line filters with identical 55 A current ratings, 480 V phase-to-phase and 277 V phase-to-ground/neutral voltage specifications, chassis mount configuration, and terminal block termination. Electrical and mechanical compatibility is complete.

Q: What is the difference between the FN3258-55-52 and FN3258-55-34?

A: The primary difference is product status. The FN3258-55-52 is obsolete, while the FN3258-55-34 is active. The FN3258-55-34 also carries ROHS3 Compliant status compared to RoHS Compliant on the FN3258-55-52. All electrical and mechanical specifications remain identical.

Q: Are there packaging differences between these parts?

A: The FN3258-55-52 packaging is listed as standard, while the FN3258-55-34 is supplied in tray packaging. Both are suitable for chassis mount installation and do not affect electrical performance or mechanical compatibility.

Q: Do both parts carry the same regulatory approvals?

A: Yes. Both the FN3258-55-52 and FN3258-55-34 are approved by CSA, ENEC, and UR, and both maintain REACH Unaffected status.

Q: Is re-qualification required when switching from FN3258-55-52 to FN3258-55-34?

A: No. Identical electrical specifications, mechanical form factors, and regulatory certifications eliminate the need for system re-qualification.